68281516968 has 64 divisors (see below), whose sum is σ = 195117672960. Its totient is φ = 19506242496.

The previous prime is 68281516967. The next prime is 68281517009. The reversal of 68281516968 is 86961518286.

It is not an unprimeable number, because it can be changed into a prime (68281516967) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1360171 + ... + 1409477.

It is an arithmetic number, because the mean of its divisors is an integer number (3048713640).

Almost surely, 2^68281516968 is an apocalyptic number.

It is an amenable number.

68281516968 is an abundant number, since it is smaller than the sum of its proper divisors (126836155992).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68281516968 is a wasteful number, since it uses less digits than its factorization.

68281516968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57566 (or 57562 counting only the distinct ones).

The product of its digits is 9953280, while the sum is 60.

The spelling of 68281516968 in words is "sixty-eight billion, two hundred eighty-one million, five hundred sixteen thousand, nine hundred sixty-eight".